U.S. patent application number 16/336653 was filed with the patent office on 2020-12-10 for backlight module and display device.
This patent application is currently assigned to BOE TECHNOLOGY GROUP CO., LTD.. The applicant listed for this patent is BOE TECHNOLOGY GROUP CO., LTD.. Invention is credited to Yongda MA, Yong QIAO, Jianbo XIAN.
Application Number | 20200387021 16/336653 |
Document ID | / |
Family ID | 1000005058415 |
Filed Date | 2020-12-10 |
United States Patent
Application |
20200387021 |
Kind Code |
A1 |
MA; Yongda ; et al. |
December 10, 2020 |
BACKLIGHT MODULE AND DISPLAY DEVICE
Abstract
The present disclosure provides a backlight module and a display
device, and relates to the field of display technology. The
backlight module includes a light guide plate, a light source, a
frame portion adjacent to a light incident surface of the light
guide plate, and one or more positioning members for defining a
position of the light source. The at least one positioning member
includes a first positioning portion and a second positioning
portion. The first positioning portion is located on a surface of
the frame portion adjacent to the light incident surface. The
second positioning portion is located on the light incident
surface. The second positioning portion and the first positioning
portion are mutually constrained to restrict relative movement of
the light guide plate and the frame portion in a length direction
of the light incident surface.
Inventors: |
MA; Yongda; (Beijing,
CN) ; QIAO; Yong; (Beijing, CN) ; XIAN;
Jianbo; (Beijing, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BOE TECHNOLOGY GROUP CO., LTD. |
BEIJING |
|
CN |
|
|
Assignee: |
BOE TECHNOLOGY GROUP CO.,
LTD.
BEIJING
CN
|
Family ID: |
1000005058415 |
Appl. No.: |
16/336653 |
Filed: |
October 23, 2018 |
PCT Filed: |
October 23, 2018 |
PCT NO: |
PCT/CN2018/111432 |
371 Date: |
March 26, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F 1/133608 20130101;
G02B 6/009 20130101; G02F 1/133308 20130101; G02F 2001/133322
20130101 |
International
Class: |
G02F 1/1333 20060101
G02F001/1333; G02F 1/13357 20060101 G02F001/13357; F21V 8/00
20060101 F21V008/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 20, 2018 |
CN |
201820565709.X |
Claims
1. A backlight module, comprising: a light guide plate; a light
source; a frame portion adjacent to a light incident surface of the
light guide plate; and one or more positioning members for defining
a position of the light source, wherein at least one of the
positioning members comprises: a first positioning portion located
on one surface of the frame portion adjacent to the light incident
surface, and a second positioning portion located on the light
incident surface, wherein the second positioning portion and the
first positioning portion are mutually constrained to restrict
relative movement of the light guide plate and the frame portion in
a length direction of the light incident surface.
2. The backlight module according to claim 1, wherein a material of
the second positioning portion comprises a transparent
material.
3. The backlight module according to claim 1, wherein an end of the
first positioning portion is mounted to be complementary to an end
of the second positioning portion.
4. The backlight module according to claim 3, wherein the end of
the second positioning portion defines a first concave portion, in
which at least a part of the end of the first positioning portion
is embedded.
5. The backlight module according to claim 4, wherein the end of
the first positioning portion defines a first convex portion
embedded in the first concave portion.
6. The backlight module according to claim 5, wherein the end of
the first positioning portion defines a second concave portion and
the end of the second positioning portion defines a second convex
portion embedded in the second concave portion.
7. The backlight module according to claim 5, wherein the first
concave portion is an arc-shaped concave portion and the first
convex portion is an arc-shaped convex portion.
8. The backlight module according to claim 4, wherein the end of
the first positioning portion is entirely embedded in the first
concave portion.
9. The backlight module according to claim 1, wherein the at least
one of the positioning members comprises a plurality of positioning
members, a length, in a direction from the light incident surface
to the frame portion, of a second positioning portion on an
intermediate area of the light incident surface is smaller than
that of a second positioning portion on an edge area of the light
incident surface.
10. The backlight module according to claim 9, wherein a length of
one of any two adjacent second positioning portions in the
plurality of positioning members, which is adjacent to the
intermediate area, is smaller than that of the other of the two
adjacent second positioning portions, which is away from the
intermediate area.
11. The backlight module according to claim 9 or 10, wherein a
length of a first positioning portion on the intermediate area is
greater than that of a first positioning portion on the edge
area.
12. The backlight module according to claim 11, wherein a length of
one of any two adjacent first positioning portions in the plurality
of positioning members, which is adjacent to the intermediate area,
is greater than that of the other of the two adjacent first
positioning portions, which is away from the intermediate area.
13. The backlight module according to claim 1, wherein a material
of the second positioning portion is the same as that of the light
guide plate.
14. The backlight module according to claim 13, wherein the second
positioning portion and the light guide plate are integrally
provided.
15. The backlight module according to claim 1, wherein a material
of the second positioning portion is different from that of the
light guide plate.
16. The backlight module according to claim 1, wherein the first
positioning portion and the frame portion are integrally
provided.
17. A display device, comprising the backlight module according to
claim 1.
18. The backlight module according to claim 2, wherein an end of
the first positioning portion is mounted to be complementary to an
end of the second positioning portion.
19. The backlight module according to claim 10, wherein a length of
a first positioning portion on the intermediate area is greater
than that of a first positioning portion on the edge area.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present disclosure claims priority to China Patent
Application No. 201820565709.X filed on Apr. 20, 2018, the
disclosure of which is incorporated by reference herein in its
entirety.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of display
technology, and especially to a backlight module and a display
device.
BACKGROUND
[0003] In a backlight module, positioning members for limiting a
position of a light source which is disposed in a groove between
the positioning members is disposed on a frame. The light emitted
from the light source enters a light guide plate from a light
incident surface of the light guide plate, and exits toward a
liquid crystal panel from a light exiting surface of the light
guide plate.
SUMMARY
[0004] According to one aspect of embodiments of the present
disclosure, a backlight module is provided. The backlight module
comprises a light guide plate; a light source; a frame portion
adjacent to a light incident surface of the light guide plate; and
one or more positioning members for defining a position of the
light source, wherein at least one of the positioning members
comprises: a first positioning portion located on one surface of
the frame portion adjacent to the light incident surface, and a
second positioning portion located on the light incident surface,
wherein the second positioning portion and the first positioning
portion are mutually constrained to restrict relative movement of
the light guide plate and the frame portion in a length direction
of the light incident surface.
[0005] In some embodiments, a material of the second positioning
portion comprises a transparent material.
[0006] In some embodiments, an end of the first positioning portion
is mounted to be complementary to an end of the second positioning
portion.
[0007] In some embodiments, the end of the second positioning
portion defines a first concave portion, in which at least a part
of the end of the first positioning portion is embedded.
[0008] In some embodiments, the end of the first positioning
portion defines a first convex portion embedded in the first
concave portion.
[0009] In some embodiments, the end of the first positioning
portion defines a second concave portion and the end of the second
positioning portion defines a second convex portion embedded in the
second concave portion.
[0010] In some embodiments, the first concave portion is an
arc-shaped concave portion and the first convex portion is an
arc-shaped convex portion.
[0011] In some embodiments, the end of the first positioning
portion is entirely embedded in the first concave portion.
[0012] In some embodiments, the at least one of the positioning
members comprises a plurality of positioning members, a length, in
a direction from the light incident surface to the frame portion,
of a second positioning portion on an intermediate area of the
light incident surface is smaller than that of a second positioning
portion on an edge area of the light incident surface.
[0013] In some embodiments, a length of one of any two adjacent
second positioning portions in the plurality of positioning
members, which is adjacent to the intermediate area, is smaller
than that of the other of the two adjacent second positioning
portions, which is away from the intermediate area.
[0014] In some embodiments, a length of a first positioning portion
on the intermediate area is greater than that of a first
positioning portion on the edge area.
[0015] In some embodiments, a length of one of any two adjacent
first positioning portions in the plurality of positioning members,
which is adjacent to the intermediate area, is greater than that of
the other of the two adjacent first positioning portions, which is
away from the intermediate area.
[0016] In some embodiments, a material of the second positioning
portion is the same as that of the light guide plate.
[0017] In some embodiments, the second positioning portion and the
light guide plate are integrally provided.
[0018] In some embodiments, a material of the second positioning
portion is different from that of the light guide plate.
[0019] In some embodiments, the first positioning portion and the
frame portion are integrally provided.
[0020] According to another aspect of embodiments of the present
disclosure, a display device is provided. The display device
comprises the backlight module according to any one of above
embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings, which constitute part of this
specification, illustrate exemplary embodiments of the present
disclosure and, together with this specification, serve to explain
the principles of the present disclosure.
[0022] The present disclosure can be understood more clearly from
the following detailed description with reference to the
accompanying drawings, in which:
[0023] FIG. 1 is a schematic structural view showing a backlight
module according to some embodiments of the present disclosure;
[0024] FIG. 2 is a schematic structural view showing a part of the
backlight module shown in FIG. 1;
[0025] FIG. 3 is a schematic structural view showing the light
source in the backlight module shown in FIG. 1;
[0026] FIG. 4A is a schematic view showing a first positioning
portion and a second positioning portion that are complementarily
mounted according to some implementations of the present
disclosure;
[0027] FIG. 4B is a schematic view showing a first positioning
portion and a second positioning portion that are complementarily
mounted according to other implementations of the present
disclosure;
[0028] FIG. 4C is a schematic view showing a first positioning
portion and a second positioning portion that are complementarily
mounted according to still other implementations of the present
disclosure;
[0029] FIG. 5 is a schematic structural view showing a backlight
module according to other embodiments of the present
disclosure;
[0030] FIG. 6 is a schematic structural view showing a display
device according to some embodiments of the present disclosure.
[0031] It should be understood that the dimensions of the various
parts shown in the accompanying drawings are not necessarily drawn
according to the actual scale. In addition, the same or similar
reference signs are used to denote the same or similar
components.
DETAILED DESCRIPTION
[0032] Various exemplary embodiments of the present disclosure will
now be described in detail with reference to the accompanying
drawings. The following description of the exemplary embodiments is
merely illustrative and is in no way intended as a limitation to
the present disclosure, its application or use. The present
disclosure may be implemented in many different forms, which are
not limited to the embodiments described herein. These embodiments
are provided to make the present disclosure thorough and complete,
and fully convey the scope of the present disclosure to those
skilled in the art.
[0033] It should be noticed that: relative arrangement of
components and steps, material composition, numerical expressions,
and numerical values set forth in these embodiments, unless
specifically stated otherwise, should be explained as merely
illustrative, and not as a limitation.
[0034] The use of the terms "first", "second" and similar words in
the present disclosure do not denote any order, quantity or
importance, but are merely used to distinguish between different
parts. A word such as "comprise", "have" or variants thereof means
that the element before the word covers the element(s) listed after
the word without excluding the possibility of also covering other
elements. The terms "up", "down", or the like are used only to
represent a relative positional relationship, and the relative
positional relationship may be changed correspondingly if the
absolute position of the described object changes.
[0035] In the present disclosure, when it is described that a
specific component is disposed between a first component and a
second component, there may be an intervening component between the
specific component and the first component or between the specific
component and the second component. When it is described that a
specific part is connected to other parts, the specific part may be
directly connected to the other parts without an intervening part,
or not directly connected to the other parts with an intervening
part.
[0036] Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meanings as the
meanings commonly understood by one of ordinary skill in the art to
which the present disclosure belongs. It should also be understood
that terms as defined in general dictionaries, unless explicitly
defined herein, should be interpreted as having meanings that are
consistent with their meanings in the context of the relevant art,
and not to be interpreted in an idealized or extremely formalized
sense.
[0037] Techniques, methods, and apparatus known to those of
ordinary skill in the relevant art may not be discussed in detail,
but where appropriate, these techniques, methods, and apparatuses
should be considered as part of this specification.
[0038] The inventors have noted that, after a light source is
mounted at a position defined by a positioning member, the light
source generally corresponds to certain dots on the light guide
plate. However, since there is no mutual constraint between the
frame and the light incident surface of the light guide plate, a
relative movement of the light guide plate and the frame easily
occurs in a length direction of the light incident surface, thereby
resulting in deviation in the relative positions of the light
source and the corresponding dots on the light guide plate, and
further affecting the light exiting effect of the light guide
plate.
[0039] In order to solve the above problem described, the
embodiments of the present disclosure provide the following
technical solutions.
[0040] FIG. 1 is a schematic structural view showing a backlight
module according to some embodiments of the present disclosure.
FIG. 2 is a schematic structural view showing a part of the
backlight module shown in FIG. 1. FIG. 3 is a schematic structural
view showing the light source in the backlight module shown in FIG.
1.
[0041] The backlight module according to some embodiments of the
present disclosure will be introduced below with reference to FIGS.
1-3.
[0042] As shown in FIG. 1 and FIG. 2, the backlight module
comprises a light guide plate 101, a light source 105, a frame
portion 102 adjacent to the light incident surface 111 of the light
guide plate 101, and one or more positioning members 103. It should
be understood that, the frame portion 102 herein is a portion of
the frame of the backlight module that is adjacent to the light
incident surface 111 of the light guide plate 101. The frame of the
backlight module also comprises other portions connected to the
frame portion 102.
[0043] The backlight module may also comprise a back plate 104. For
example, the back plate 104 may comprise a bottom plate and a side
plate connected to the bottom plate. The light guide plate 101 may
be located on the bottom plate, and the frame portion 102 may be
located on the side plate. The backlight module may also comprise a
light source 105. In some embodiments, as shown in FIGS. 1 and 3,
the light source 105 may comprise a light source mount frame 115
and a plurality of point light sources 125 mounted on the light
source mount frame 115. The light source mounting frame 115 may be
connected to the positioning member 103 through a connecting layer
(for example, a light reflective adhesive layer). As an example,
the light source 105 may comprise an LED (Light Emitting Diode)
light bar.
[0044] One or more positioning members 103 are used to define the
position of the light source 105. As shown in FIG. 2, gaps 106 are
defined between adjacent positioning members 103 and between the
positioning member 103 and the frame portion 102. The point light
sources 125 of the light source 105 may be located in the gaps
106.
[0045] At least one positioning member 103 of the one or more
positioning members 103 comprises a first positioning portion 113
and a second positioning portion 123 that are oppositely disposed.
The first positioning portion 113 is located on one surface of the
frame portion 102 adjacent to the light incident surface 111, and
the second positioning portion 123 is located on the light incident
surface 111. The first positioning portion 113 and the second
positioning portion 123 are mutually constrained to restrict
relative movement of the light guide plate 101 and the frame
portion 102 in the length direction of the light incident surface
111. Here, the light incident surface 111 extends along a direction
parallel to the direction indicated by the arrow L. The length
direction of the light incident surface 111 may also be understood
as the direction the light incident surface 111 extends.
[0046] In some embodiments, the first positioning portion 113 and
the frame portion 102 may be integrally provided. However, the
present disclosure is not limited thereto, and in other
embodiments, the first positioning portion 113 may be separately
disposed on the frame portion 102.
[0047] In the above embodiments, at least one positioning member
defining the position of the light source comprises a first
positioning portion and a second positioning portion that are
mutually constrained. The first positioning portion and the second
positioning portion may restrict relative movement of the light
guide plate and the frame portion in the length direction of the
light incident surface. Such a structure may make the relative
positions of the light source and the corresponding dots on the
light guide plate not easily deviate, thereby improving the light
emitting effect of the light guide plate.
[0048] The inventors have also noted that, in a case where the
position of the light source is defined by the positioning member
on the frame alone, if the positioning member has an excessive
length in the direction toward the light incident surface of the
light guide plate, a part of the light emitted from the light
source cannot enter the light guide plate, and the light guide
plate has a lower light incidence efficiency. If the length of the
positioning member in the direction toward the light incident
surface of the light guide plate is reduced, it is possible to make
more light enter the light guide plate and improve the light
incidence efficiency of the light guide plate. However, this in
turn makes the positioning member not able to favorably restrict
the position of the light source, causing the light source easily
move. Therefore, it is difficult to balance the requirements of
both light incidence efficiency of the light guide plate and the
positioning of the light source by defining the position of the
light source with the positioning member on the frame alone.
[0049] In order to balance the requirements of both light incidence
efficiency of the light guide plate and the positioning of the
light source, in some embodiments, a material of the second
positioning portion 123 may comprise a transparent material. In
such a structure, in a case where the length of the first
positioning portion 113 is smaller, the position of the light
source may still be favorably restricted by the positioning member
103. In addition, since the material of the second positioning
portion 123 is a transparent material, the light emitted from the
light source 105 can also enter the light guide plate 101 through
the second positioning portion 123 without reducing the light
incidence efficiency of the light guide plate 101.
[0050] In some embodiments, the material of the second positioning
portion 123 may be the same as that of the light guide plate 101.
In some implementations, the second positioning portion 123 and the
light guide plate 101 may be integrally provided. For example, the
material of the second positioning portion 123 and the material of
the light guide plate 101 may comprise polycarbonate (PC) or
polymethyl methacrylate (PMMA). In other embodiments, the material
of the second positioning portion 123 may also be different from
that of the light guide plate 101.
[0051] In a case where the material of the second positioning
portion 123 is the same as that of the light guide plate 101, the
light entering the second positioning portion 123 can propagate by
total reflection, and then enter the light guide plate 101, so that
it is possible to make more light enter the light guide plate,
thereby further improving the light incidence efficiency of the
light guide plate.
[0052] The first positioning portion 113 and the second positioning
portion 123 may be mounted together in different manners. For
example, in some embodiments, the first positioning portion 113 and
the second positioning portion 123 may be adhered together. For
another example, in other embodiments, an end of the first
positioning portion 113 may be mounted to be complementary to an
end of the second positioning portion 123. In a case where the
second positioning portion 123 comprises a transparent material,
the end of the first positioning portion 113 and the end of the
second positioning portion 123 that are complementarily mounted may
favorably balance the light incidence efficiency of the light guide
plate and the positioning of the light source.
[0053] Implementations in which the first positioning portion 113
and the second positioning portion 123 are complementarily mounted
will be introduced below with reference to FIGS. 4A-4C. In FIGS.
4A-4C, the end of the second positioning portion 123 defines a
first concave portion 1231, and at least a part of the end of the
first positioning portion 113 is embedded in the first concave
portion 1231.
[0054] It should be noted that, for the sake of illustration, FIGS.
4A-4C only show a pair of first positioning portion 113 and second
positioning portion 123 that are oppositely disposed. In addition,
in order to show the structures of the first positioning portion
113 and the second positioning portion 123 more clearly, FIGS. 4A
to 4C show the separated state of the first positioning portion 113
and the second positioning portion 123, instead of the state in
which both of them are mounted together.
[0055] FIG. 4A is a schematic view showing a first positioning
portion and a second positioning portion that are complementarily
mounted according to some implementations of the present
disclosure. As shown in FIG. 4A, the end of the second positioning
portion 123 defines a first concave portion 1231, and the end of
the first positioning portion 113 defines a first convex portion
1131 embedded in the first concave portion 1231. That is to say, a
part of the end of the first positioning portion 113 is embedded in
the first concave portion 1231. As an example, the first concave
portion 1231 may be an arc-shaped concave portion, and the first
convex portion 1131 may be an arc-shaped convex portion. However,
the present disclosure is not limited thereto.
[0056] FIG. 4B is a schematic view showing a first positioning
portion and a second positioning portion that are complementarily
mounted according to other implementations of the present
disclosure. As shown in FIG. 4B, the end of the second positioning
portion 123 defines a first concave portion 1231, and the end of
the first positioning portion 113 is entirely embedded in the first
concave portion 1231. Here, although the first positioning portion
113 and the first concave portion 1231 shown in FIG. 4B are
rectangular, this is not intended to limit the present disclosure.
For example, in some implementations, the end of the first
positioning portion 113 and the first concave portion 1231 may be
in other shapes such as an inverted trapezoid.
[0057] In the above two implementations, the first positioning
portion is partly or entirely embedded in the first concave portion
of the second positioning portion, so that not only the first
positioning portion and the second positioning portion may be
complementarily mounted together, but also more light emitted from
the light source may enter the second positioning portion, thereby
improving the light incidence efficiency of the light guide
plate.
[0058] FIG. 4C is a schematic view showing a first positioning
portion and a second positioning portion that are complementarily
mounted according to still other implementations of the present
disclosure. As shown in FIG. 4C, the end of the second positioning
portion 123 defines a first concave portion 1231, and the end of
the first positioning portion 113 defines a first convex portion
1131 embedded in the first concave portion 1231. In addition, the
end of the first positioning portion 113 defines a second concave
portion 1132, and the end of the second positioning portion 123
defines a second convex portion 1232 embedded in the second concave
portion 1132.
[0059] In the above implementation, the first positioning portion
and the second positioning portion are mutually embedded, so that
they can be bonded stronger, thereby the position of the light
source can be better restricted.
[0060] FIG. 5 is a schematic structural view showing a backlight
module according to other embodiments of the present
disclosure.
[0061] As shown in FIG. 5, the backlight module comprises a light
guide plate 101, a frame portion 102 adjacent to the light incident
surface 111 of the light guide plate 101, and a plurality of
positioning members 103. Each of the positioning members 103
comprises a first positioning portion 113 and a second positioning
portion 123 that are oppositely disposed.
[0062] In the following description, the lengths of the second
positioning portion 123 and the first positioning portion 113 may
be understood as the lengths of the second positioning portion 123
and the first positioning portion 113 extending in the direction
from the light incident surface 111 to the frame portion 102, or
the lengths extending in the direction from the frame portion 102
to the light incident surface 111.
[0063] In FIG. 5, in the arrangement direction of the plurality of
positioning members 103, the point A is the edge of the light
incident surface 111, and the point O is the midpoint of the light
incident surface 111. The length of a second positioning portion
123 on the intermediate area of the light incident surface 111
(i.e., the area adjacent to the point O) is smaller than that of a
second positioning portion 123 on the edge area of the light
incident surface 111 (i.e., the area adjacent to the point A). For
example, the length L3 of the second positioning portion 123 on the
area of the light incident surface 111 adjacent to the point O is
smaller than the length L1 of the second positioning portion 123 on
the area of the light incident surface 111 adjacent to the point A.
In some embodiments, the length H3 of the first positioning portion
113 on the intermediate area of the light incident surface 111 is
greater than the length H1 of the first positioning portion 113 on
the edge area of the light incident surface 111.
[0064] It should be understood that the intermediate area and the
edge area of the light incident surface 111 are relative concepts.
The number of the positioning member 103 on the intermediate area
of the light incident surface 111 is not limited to one, and the
number of the positioning member 103 on the edge area of the light
incident surface 111 is not limited to one. For example, in a case
where the intermediate area and the edge area of the light incident
surface 111 which each has a plurality of positioning members 103
being disposed, the average value of the lengths of the second
positioning portions 123 of the plurality of positioning members
103 on the intermediate area of the light incident surface 111 is
smaller than that of the second positioning portions 123 of the
plurality of positioning members 103 on the edge area of the light
incident surface 111.
[0065] In the above embodiment, the length of the second
positioning portion on the intermediate area of the light incident
surface is smaller than that of the second positioning portion on
the edge area of the light incident surface. Therefore, the light
entering the intermediate area of the light incident surface via
the second positioning portion is more than that entering the edge
area of the light incident surface, thereby making the light
emitted by the light guide plate more uniform.
[0066] In some embodiments, in order to make the light emitted from
the light guide plate more uniform, in the second positioning
portions 123 of any two adjacent positioning members 103 of the
plurality of positioning members 103, the length of the second
positioning portion 123 adjacent to the intermediate area is
smaller than that of the second positioning portion 123 away from
the intermediate area. In other words, the lengths of the second
positioning portions 123 in the direction from the intermediate
area to the edge area of the light incident surface 111 are
sequentially increased. For example, referring to FIG. 5, the
lengths of the three second positioning portions 123 on the light
incident surface 111 in the direction from the area adjacent to the
point O to the area adjacent to the point A are sequentially
increased, that is, L3<L2<L1. In at least one embodiment, in
the first positioning portions 113 of any two adjacent positioning
members 103, the length of the first positioning portion 113
adjacent to the intermediate area is greater than that of the first
positioning portion 113 away from the intermediate area. That is,
the lengths of the first positioning portions 113 in the direction
from the intermediate area to the edge area of the light incident
surface 111 are sequentially decreased. For example, the lengths of
the three first positioning portions 113 on the light incident
surface 111 in the direction from the area adjacent to the point O
to the area adjacent to the point A are sequentially decreased,
that is, H3>H2>H1.
[0067] FIG. 6 is a schematic structural view showing a display
device according to some embodiments of the present disclosure. As
shown in FIG. 6, the display device 600 may comprise the backlight
module 601 according to any one of the above embodiments. The
display device 600 may be any product or member having a display
function, such as a display panel, a mobile terminal, a television,
a display, a notebook computer, a digital photo frame, a navigator,
or an electronic paper.
[0068] Hereto, various embodiments of the present disclosure have
been described in detail. Some details well known in the art are
not described to avoid obscuring the concept of the present
disclosure. According to the above description, those skilled in
the art would fully know how to implement the technical solutions
disclosed herein.
[0069] Although some specific embodiments of the present disclosure
have been described in detail by way of examples, those skilled in
the art should understand that the above examples are only for the
purpose of illustration and are not intended to limit the scope of
the present disclosure. It should be understood by those skilled in
the art that modifications to the above embodiments and
equivalently substitution of part of the technical features can be
made without departing from the scope and spirit of the present
disclosure. The scope of the disclosure is defined by the following
claims.
* * * * *